Structural investigation of praseodymium potassium hexacyanoferrate (II) tetrahydrate, PrKFe(CN)/sub 6/ x 4H/sub 2/O
Journal Article
·
· J. Solid State Chem.; (United States)
Single-crystal and powder X-ray diffraction data, thermal gravimetric analysis, and infrared spectral data are present for PrKFe(CN)/sub 6/ x 4H/sub 2/O. The crystal structure has been determined by single-crystal diffractometry and refined by the least-squares method to yield R = 0.0149 and R/sub w/ = 0.0155. The praseodymium ions are linked nonlinearly to the FeC/sub 6/ octahedra by cyanide bridges. Cavities within the structure are occupied by potassium ions and zeolitic water molecules which are within hydrogen bonding distance to the water molecules which are bonded to the nine-coordinated praseodymium ions, PrN/sub 6/(H/sub 2/O)/sub 3/. The powder diffraction data obtained by employing a Siemens Debye-Scherrer camera have yielded cell parameters of a = 7.374(2) and c = 13.816(3) A. The compound is hexagonal, P6/sub 3//m (No. 176), D/sub M/ = 2.34(3) Mg m/sup -3/, and D/sub x/ = 2.368 Mg m/sup -3/. The powder diffraction data have been evaluated and the resultant quantitative figures of merit are F/sub 30/ = 30(0.021, 48) and M20 = 29.7. Important bond lengths are: Pr-N = 2.540(3); Fe-C = 1.908(3); Pr-O = 2.704(4); and C=N = 1.159(4) A.
- Research Organization:
- Baylor Univ., Waco, TX (USA)
- OSTI ID:
- 7160966
- Journal Information:
- J. Solid State Chem.; (United States), Journal Name: J. Solid State Chem.; (United States) Vol. 73:1; ISSN JSSCB
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
36 MATERIALS SCIENCE
360601* -- Other Materials-- Preparation & Manufacture
ALKALI METAL COMPOUNDS
CHEMICAL ANALYSIS
COHERENT SCATTERING
CRYSTAL LATTICES
CRYSTAL STRUCTURE
CRYSTALS
CYANIDES
DIFFRACTION
GRAVIMETRIC ANALYSIS
HEXAGONAL LATTICES
HYDRATES
INFRARED SPECTRA
IRON COMPOUNDS
LATTICE PARAMETERS
MONOCRYSTALS
POTASSIUM COMPOUNDS
POWDERS
PRASEODYMIUM COMPOUNDS
QUANTITATIVE CHEMICAL ANALYSIS
RARE EARTH COMPOUNDS
SCATTERING
SPECTRA
THERMAL ANALYSIS
THERMAL GRAVIMETRIC ANALYSIS
TRANSITION ELEMENT COMPOUNDS
X-RAY DIFFRACTION
360601* -- Other Materials-- Preparation & Manufacture
ALKALI METAL COMPOUNDS
CHEMICAL ANALYSIS
COHERENT SCATTERING
CRYSTAL LATTICES
CRYSTAL STRUCTURE
CRYSTALS
CYANIDES
DIFFRACTION
GRAVIMETRIC ANALYSIS
HEXAGONAL LATTICES
HYDRATES
INFRARED SPECTRA
IRON COMPOUNDS
LATTICE PARAMETERS
MONOCRYSTALS
POTASSIUM COMPOUNDS
POWDERS
PRASEODYMIUM COMPOUNDS
QUANTITATIVE CHEMICAL ANALYSIS
RARE EARTH COMPOUNDS
SCATTERING
SPECTRA
THERMAL ANALYSIS
THERMAL GRAVIMETRIC ANALYSIS
TRANSITION ELEMENT COMPOUNDS
X-RAY DIFFRACTION